pair<Vec3, Vec3> RotateDesktopGesture::calculateCameraPosition()
{
// Right Direction
Vec3 referenceDirection(-1.0f, 0.0f, 0.0f);
Vec3 position, direction;
Vec3 startPosition, endPosition;
Vec3 startDirection, endDirection;
int startWallIndex, endWallIndex;
float ratio = 1.0f;
Vec3 camDirection(cam->getDir().x, cam->getDir().z, 0.0f);
Vec3 camPosition(cam->getEye().x, cam->getEye().z, 0.0f);
float angle = getAngleBetween(camDirection, referenceDirection);
if (camDirection.y > 0.0f)
{
// The camera is pointing in the upper quadrants
if (angle < 90.0f)
{
//first quadrant
ratio = angle / 90.0f;
startWallIndex = 2;
endWallIndex = 0;
}
else if (angle >= 90.0f && angle <= 180.0f)
{
//second quadrant
ratio = (angle - 90.0f) / 90.0f;
startWallIndex = 0;
endWallIndex = 3;
}
}
else
{
// The camera is pointing in the lower quadrants
if (angle < 90.0f)
{
//fourth quadrant
ratio = angle / 90.0f;
startWallIndex = 2;
endWallIndex = 1;
}
else if (angle >= 90.0f && angle <= 180.0f)
{
//third quadrant
ratio = (angle - 90.0f) / 90.0f;
startWallIndex = 1;
endWallIndex = 3;
}
}
// Find the two points in the world to interpolate between
cam->lookAtWall(GLOBAL(Walls)[startWallIndex], startPosition, startDirection);
cam->lookAtWall(GLOBAL(Walls)[endWallIndex], endPosition, endDirection);
position = lerp(startPosition, endPosition, ratio);
direction = lerp(startDirection, endDirection, ratio);
return make_pair(position, direction);
}
//--------------------------------------------------------------
void testApp::mouseMoved(int x, int y ){
//let's move the camera when you move the mouse
float rotateAmount = ofMap(ofGetMouseY(), 0, ofGetHeight(), 0, 360);
//move the camera around the mesh
ofVec3f camDirection(0,0,1);
ofVec3f centre(vidGrabber.getWidth()/2.f,vidGrabber.getHeight()/2.f, 255/2.f);
ofVec3f camDirectionRotated = camDirection.rotated(rotateAmount, ofVec3f(1,0,0));
ofVec3f camPosition = centre + camDirectionRotated * extrusionAmount;
cam.setPosition(camPosition);
cam.lookAt(centre);
}
int RotateDesktopGesture::getWallCameraIsFacing()
{
Vec3 camDirection(cam->getDir().x, cam->getDir().z, 0.0f);
Vec3 camPosition(cam->getEye().x, cam->getEye().z, 0.0f);
Vec3 referenceDirection(-1.0f, 0.0f, 0.0f);
float angle = getAngleBetween(camDirection, referenceDirection);
Vec3 desktopDims = GetDesktopBox().GetExtents();
if (camDirection.y > 0.0f)
{
float frontLeftAngle = getAngleBetween(Vec3(desktopDims.x, desktopDims.z, 0.0f) - camPosition, referenceDirection);
float frontRightAngle = getAngleBetween(Vec3(-desktopDims.x, desktopDims.z, 0.0f) - camPosition, referenceDirection);
if (angle < frontRightAngle)
{
return 2;
}
else if (angle >= frontRightAngle && angle < frontLeftAngle)
{
return 0;
}
else if (angle >= frontLeftAngle)
{
return 3;
}
}
else
{
float backRightAngle = getAngleBetween(Vec3(-desktopDims.x, -desktopDims.z, 0.0f) - camPosition, referenceDirection);
float backLeftAngle = getAngleBetween(Vec3(desktopDims.x, -desktopDims.z, 0.0f) - camPosition, referenceDirection);
if (angle < backRightAngle)
{
return 2;
}
else if (angle >= backRightAngle && angle < backLeftAngle)
{
return 1;
}
else if (angle >= backLeftAngle)
{
return 3;
}
}
return -1;
}
//--------------------------------------------------------------
void testApp::update(){
//grab a new frame
vidGrabber.update();
//update the mesh if we have a new frame
if (vidGrabber.isFrameNew()){
//this determines how far we extrude the mesh
for (int i=0; i<vidGrabber.getWidth()*vidGrabber.getHeight(); i++){
ofFloatColor sampleColor(vidGrabber.getPixels()[i*3]/255.f, // r
vidGrabber.getPixels()[i*3+1]/255.f, // g
vidGrabber.getPixels()[i*3+2]/255.f); // b
//now we get the vertex aat this position
//we extrude the mesh based on it's brightness
ofVec3f tmpVec = mainMesh.getVertex(i);
tmpVec.z = sampleColor.getBrightness() * extrusionAmount;
mainMesh.setVertex(i, tmpVec);
mainMesh.setColor(i, sampleColor);
}
}
//let's move the camera when you move the mouse
float rotateAmount = ofMap(ofGetMouseY(), 0, ofGetHeight(), 0, 360);
//move the camera around the mesh
ofVec3f camDirection(0,0,1);
ofVec3f centre(vidGrabber.getWidth()/2.f,vidGrabber.getHeight()/2.f, 255/2.f);
ofVec3f camDirectionRotated = camDirection.rotated(rotateAmount, ofVec3f(1,0,0));
ofVec3f camPosition = centre + camDirectionRotated * extrusionAmount;
cam.setPosition(camPosition);
cam.lookAt(centre);
}
//--------------------------------------------------------------
void ofApp::update() {
float t = (ofGetElapsedTimef()) * 0.9f;
float div = 250.0;
for (int i=0; i<NUM_BILLBOARDS; i++) {
// noise
ofVec3f vec(ofSignedNoise(t, billboards.getVertex(i).y/div, billboards.getVertex(i).z/div),
ofSignedNoise(billboards.getVertex(i).x/div, t, billboards.getVertex(i).z/div),
ofSignedNoise(billboards.getVertex(i).x/div, billboards.getVertex(i).y/div, t));
vec *= 10 * ofGetLastFrameTime();
billboardVels[i] += vec;
billboards.getVertices()[i] += billboardVels[i];
billboardVels[i] *= 0.94f;
billboards.setNormal(i,ofVec3f(12 + billboardSizeTarget[i] * ofNoise(t+i),0,0));
}
// move the camera around
float mx = (float)mouseX/(float)ofGetWidth();
float my = (float)mouseY/(float)ofGetHeight();
ofVec3f des(mx * 360.0, my * 360.0, 0);
cameraRotation += (des-cameraRotation) * 0.03;
zoom += (zoomTarget - zoom) * 0.03;
//grab a new frame
vidGrabber.update();
//update the mesh if we have a new frame
if (vidGrabber.isFrameNew()){
//this determines how far we extrude the mesh
for (int i=0; i<vidGrabber.getWidth()*vidGrabber.getHeight(); i++){
ofFloatColor sampleColor(vidGrabber.getPixels()[i*3]/255.f, // r
vidGrabber.getPixels()[i*3+1]/255.f, // g
vidGrabber.getPixels()[i*3+2]/255.f); // b
//now we get the vertex aat this position
//we extrude the mesh based on it's brightness
ofVec3f tmpVec = mainMesh.getVertex(i);
tmpVec.z = sampleColor.getBrightness() * extrusionAmount;
mainMesh.setVertex(i, tmpVec);
mainMesh.setColor(i, sampleColor);
}
}
//let's move the camera when you move the mouse
float rotateAmount = ofMap(ofGetMouseY(), 0, ofGetHeight(), 0, 360);
//move the camera around the mesh
ofVec3f camDirection(0,0,1);
ofVec3f centre(vidGrabber.getWidth()/2.f,vidGrabber.getHeight()/2.f, 255/2.f);
ofVec3f camDirectionRotated = camDirection.rotated(rotateAmount, ofVec3f(1,0,0));
ofVec3f camPosition = centre + camDirectionRotated * extrusionAmount;
cam.setPosition(camPosition);
cam.lookAt(centre);
}
